0bdde846340e6db5eaee75f539508cfebe45acca9d683556d574cf882ecee61c

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
11/05/2024, 20:24

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General

Target

2024-05-11_2dd98719ca7cd9782b390318a6344211_cryptolocker.exe
Size

38KB
MD5

2dd98719ca7cd9782b390318a6344211
SHA1

92322f0d435c6147ee1dbd50b699ed24bef55d99
SHA256

0bdde846340e6db5eaee75f539508cfebe45acca9d683556d574cf882ecee61c
SHA512

beee78c3085564eaec5def367d7822cff6345ed3b727d63d8d87c71eb546b70d08f48a07854ca8c7090ec5e3ebc5458df4de2f53fdf22b1e9e313904f1aee03b
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYaBP:qDdFJy3QMOtEvwDpjjWMl7TdJ

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1976-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000022f42-13.dat	CryptoLocker_rule2
behavioral2/memory/2112-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1976-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2112-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/1976-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0006000000022f42-13.dat	CryptoLocker_set1
behavioral2/memory/2112-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1976-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2112-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/1976-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0006000000022f42-13.dat	UPX
behavioral2/memory/2112-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1976-19-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2112-28-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-11_2dd98719ca7cd9782b390318a6344211_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2112	asih.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1976-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0006000000022f42-13.dat	upx
behavioral2/memory/2112-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1976-19-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2112-28-0x0000000000500000-0x0000000000510000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1976 wrote to memory of 2112	1976	2024-05-11_2dd98719ca7cd9782b390318a6344211_cryptolocker.exe	81
PID 1976 wrote to memory of 2112	1976	2024-05-11_2dd98719ca7cd9782b390318a6344211_cryptolocker.exe	81
PID 1976 wrote to memory of 2112	1976	2024-05-11_2dd98719ca7cd9782b390318a6344211_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-05-11_2dd98719ca7cd9782b390318a6344211_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-11_2dd98719ca7cd9782b390318a6344211_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1976
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2112

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
39KB

MD5
6279ce0e1682087a51e3f17669c6e4ba

SHA1
059038bca00cd23d196eac16ebf033f0cdd1aa96

SHA256
5d7ceb67558e956d91979d97ff7b9d1bd09524fcf5269734778795687ada8214

SHA512
bbb36995274fbdd8c940684910e6c168196914d1f812f22061ffd0f6ee5ae208a8c2b2267bd5949207ea4a531df39b00b50bd5f8ebb1b4d5b8be251f4fa00a79

Download Submit
memory/1976-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1976-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1976-2-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/1976-9-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1976-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2112-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2112-21-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2112-27-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2112-28-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download